ECSP982652A - PROCESS FOR THE MANUFACTURE OF A MOLDED ITEM - Google Patents

PROCESS FOR THE MANUFACTURE OF A MOLDED ITEM

Info

Publication number
ECSP982652A
ECSP982652A ECSP982652A ECSP982652A EC SP982652 A ECSP982652 A EC SP982652A EC SP982652 A ECSP982652 A EC SP982652A EC SP982652 A ECSP982652 A EC SP982652A
Authority
EC
Ecuador
Prior art keywords
manufacture
prepolymer
molded item
mold
molded article
Prior art date
Application number
Other languages
Spanish (es)
Inventor
Richard Carlton Baron
Dieter Lohmann
Thomas Hirt
Wolfgang Peter Meier
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to ECSP982652 priority Critical patent/ECSP982652A/en
Publication of ECSP982652A publication Critical patent/ECSP982652A/en

Links

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Eyeglasses (AREA)

Abstract

La presente invención se refiere a un proceso para la fabricación de un articulo moldeado, el cual comprende los siguientes pasos: a) prepolímero es un copolímero anfifilico segmentado que comprende cuando menos un segmento hidrofólico A y un segmento hidrofílico B; b) preparar una mesofase del prepolímero que es cuando menos parcialmente bicontinua; c) introducir la mesofase obtenida en un molde oftálmico; d) desencadenar reticulación; y e) abrir el molde, de tal manera que se pueda remover el artículo moldeado. El proceso de la invención es particularmente adecuado para la fabricación de membranas y artículos moldeados oftálmicos, tales como lentes de contacto.The present invention relates to a process for the manufacture of a molded article, which comprises the following steps: a) prepolymer is a segmented amphiphilic copolymer comprising at least one hydrophilic segment A and one hydrophilic segment B; b) preparing a mesophase of the prepolymer that is at least partially bicontinuous; c) introducing the mesophase obtained in an ophthalmic mold; d) trigger crosslinking; and e) opening the mold, so that the molded article can be removed. The process of the invention is particularly suitable for the manufacture of ophthalmic membranes and molded articles, such as contact lenses.

ECSP982652 1998-09-02 1998-09-02 PROCESS FOR THE MANUFACTURE OF A MOLDED ITEM ECSP982652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ECSP982652 ECSP982652A (en) 1998-09-02 1998-09-02 PROCESS FOR THE MANUFACTURE OF A MOLDED ITEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ECSP982652 ECSP982652A (en) 1998-09-02 1998-09-02 PROCESS FOR THE MANUFACTURE OF A MOLDED ITEM

Publications (1)

Publication Number Publication Date
ECSP982652A true ECSP982652A (en) 1999-04-13

Family

ID=42043572

Family Applications (1)

Application Number Title Priority Date Filing Date
ECSP982652 ECSP982652A (en) 1998-09-02 1998-09-02 PROCESS FOR THE MANUFACTURE OF A MOLDED ITEM

Country Status (1)

Country Link
EC (1) ECSP982652A (en)

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